The correct answer is A) ideas around liberty, equality, and nationalism.
The following were incentives for citizens of Central Europe to revolt against the established government.
People from Central Europe countries have lived many years under the oppression of their established governments. Monarchies suppressed citizens liberties and basically depended on the will or whim of the king. So when other countries initiated their Revolutions for Independence, Central Europe nations were influenced by those ideals of freedom, equality, and nationalism.